Should be able to set a password in Your account (link at left) and use that.

The account key is in the account_*.xml file in the boinc folder. It\'s the long string between {authenticator> and {/authenticator>.

If the process hasn\'t gotten that far, you could log out from this Board and then try to access your account. You\'ll be offered a sign-in page with an option to email the account key. Still, the password option might be the best.